tools/testing/selftests/ftrace/test.d/dynevent/tprobe_syntax_errors.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Tracepoint probe event parser error log check
   4 # requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README
   5
   6 check_error() { # command-with-error-pos-by-^
   7     ftrace_errlog_check 'trace_fprobe' "$1" 'dynamic_events'
   8 }
   9
  10 check_error 't^100 kfree'               # BAD_MAXACT_TYPE
  11
  12 check_error 't:^/bar kfree'             # NO_GROUP_NAME
  13 check_error 't:^12345678901234567890123456789012345678901234567890123456789012345/bar kfree'    # GROUP_TOO_LONG
  14
  15 check_error 't:^foo.1/bar kfree'        # BAD_GROUP_NAME
  16 check_error 't:^ kfree'                 # NO_EVENT_NAME
  17 check_error 't:foo/^12345678901234567890123456789012345678901234567890123456789012345 kfree'    # EVENT_TOO_LONG
  18 check_error 't:foo/^bar.1 kfree'        # BAD_EVENT_NAME
  19
  20 check_error 't kfree ^$retval'          # RETVAL_ON_PROBE
  21 check_error 't kfree ^$stack10000'      # BAD_STACK_NUM
  22
  23 check_error 't kfree ^$arg10000'        # BAD_ARG_NUM
  24
  25 check_error 't kfree ^$none_var'        # BAD_VAR
  26 check_error 't kfree ^%rax'             # BAD_VAR
  27
  28 check_error 't kfree ^@12345678abcde'   # BAD_MEM_ADDR
  29 check_error 't kfree ^@+10'             # FILE_ON_KPROBE
  30
  31 grep -q "imm-value" README && \
  32 check_error 't kfree arg1=\^x'  # BAD_IMM
  33 grep -q "imm-string" README && \
  34 check_error 't kfree arg1=\"abcd^'      # IMMSTR_NO_CLOSE
  35
  36 check_error 't kfree ^+0@0)'            # DEREF_NEED_BRACE
  37 check_error 't kfree ^+0ab1(@0)'        # BAD_DEREF_OFFS
  38 check_error 't kfree +0(+0(@0^)'        # DEREF_OPEN_BRACE
  39
  40 if grep -A1 "fetcharg:" README | grep -q '\$comm' ; then
  41 check_error 't kfree +0(^$comm)'        # COMM_CANT_DEREF
  42 fi
  43
  44 check_error 't kfree ^&1'               # BAD_FETCH_ARG
  45
  46
  47 # We've introduced this limitation with array support
  48 if grep -q ' <type>\\\[<array-size>\\\]' README; then
  49 check_error 't kfree +0(^+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(+0(@0))))))))))))))'       # TOO_MANY_OPS?
  50 check_error 't kfree +0(@11):u8[10^'            # ARRAY_NO_CLOSE
  51 check_error 't kfree +0(@11):u8[10]^a'          # BAD_ARRAY_SUFFIX
  52 check_error 't kfree +0(@11):u8[^10a]'          # BAD_ARRAY_NUM
  53 check_error 't kfree +0(@11):u8[^256]'          # ARRAY_TOO_BIG
  54 fi
  55
  56 check_error 't kfree @11:^unknown_type'         # BAD_TYPE
  57 check_error 't kfree $stack0:^string'           # BAD_STRING
  58 check_error 't kfree @11:^b10@a/16'             # BAD_BITFIELD
  59
  60 check_error 't kfree ^arg123456789012345678901234567890=@11'    # ARG_NAME_TOO_LOG
  61 check_error 't kfree ^=@11'                     # NO_ARG_NAME
  62 check_error 't kfree ^var.1=@11'                # BAD_ARG_NAME
  63 check_error 't kfree var1=@11 ^var1=@12'        # USED_ARG_NAME
  64 check_error 't kfree ^+1234567(+1234567(+1234567(+1234567(+1234567(+1234567(@1234))))))'        # ARG_TOO_LONG
  65 check_error 't kfree arg1=^'                    # NO_ARG_BODY
  66
  67
  68 # multiprobe errors
  69 if grep -q "Create/append/" README && grep -q "imm-value" README; then
  70 echo "t:tracepoint/testevent kfree" > dynamic_events
  71 check_error '^f:tracepoint/testevent kfree'     # DIFF_PROBE_TYPE
  72
  73 # Explicitly use printf "%s" to not interpret \1
  74 printf "%s" "t:tracepoints/testevent kfree abcd=\\1" > dynamic_events
  75 check_error "t:tracepoints/testevent kfree ^bcd=\\1"    # DIFF_ARG_TYPE
  76 check_error "t:tracepoints/testevent kfree ^abcd=\\1:u8"        # DIFF_ARG_TYPE
  77 check_error "t:tracepoints/testevent kfree ^abcd=\\\"foo\"" # DIFF_ARG_TYPE
  78 check_error "^t:tracepoints/testevent kfree abcd=\\1"   # SAME_PROBE
  79 fi
  80
  81 exit 0